1. This wood stove fan provides electricity by converting heat into energy without using batteries or electricity. Hot air can quickly wax the whole room.2. Operating temperature range: about 140 F / 60 C ~ 662 F / 350 C, the higher the temperature, the faster it starts to spin. Note: The temperature should not exceed 662 F when the fan is in use. The stove fan of this wood burner is quiet, operates at 35dB, almost no noise is heard.3. Overheat protection: Titanium alloy plate on the bottom of the chimney fan. When the surface temperature exceeds approximately 300C, the safety device raises the front of the wood burner fan slightly to protect the TEG and motor4. : If you have any questions or doubts when using the fan, please feel free to contact us, we will get back to you within 24 hours. If there is a problem with the quality of the product, we can give you 2 years.5. Total dimensions of the wood burner fan: 19.5 x 7.5 cm (height x width) without installation. Just place it on the left or right side of the oven.